Results 61 to 70 of about 86,270 (268)
Intersection theory, relative cohomology and the Feynman parametrization
Journal of High Energy PhysicsWe present a novel approach for loop integral reduction in the Feynman parametrization using intersection theory and relative cohomology. In this framework, Feynman integrals correspond to boundary-supported differential forms in the language of relative
Mingming Lu, Ziwen Wang, Li Lin Yang
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Logarithmic forms and differential equations for Feynman integrals
Journal of High Energy Physics, 2020 We describe in detail how a d log representation of Feynman integrals leads to simple differential equations. We derive these differential equations directly in loop momentum or embedding space making use of a localization trick and generalized unitarity.
Enrico Herrmann, Julio Parra-Martinez
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Advanced Energy and Sustainability Research, EarlyView.Rational defect engineering in Co‐doped NiO nanostructures, synthesized via a sustainable green route, enables precise bandgap modulation and defect‐state tailoring. Combined experimental–density functional theory analysis identifies 15% Co doping as the optimal threshold for maximizing photocatalytic degradation, photothermal response, and hydrogen ...
Sumayya M. Ansari +8 more
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Efficient Numerical Evaluation of Feynman Integral
, 2016 Feynman loop integrals are a key ingredient for the calculation of higher order radiation effects, and are responsible for reliable and accurate theoretical prediction.
Li, Zhao +3 more
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Duals of Feynman Integrals, I: Differential Equations [PDF]
, 2021 Simon Caron-Huot, Andrzej Pokraka
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Enhanced Photocatalytic Activity of NH3‐SCR on Sulfur‐Doped TiO2 (101) Surface
ChemCatChem, EarlyView.S‐doped TiO2 (101) shows enhanced activity in the selective catalytic reduction of NO with NH3 (NH3‐SCR) compared to pristine TiO2. Density functional theory (DFT) calculations reveal that sulfur‐doping modifies the electronic structure and lowers the energy barrier for each step. Abstract Photo‐assisted NH3 selective catalytic reduction (photo‐NH3‐SCR)
Yuelin Wang, Masahiro Ehara
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Feynman integrals: Synergies between particle physics and gravitational waves [PDF]
EPJ Web of ConferencesFeynman integrals are essential for computing scattering amplitudes. Linear relations among these integrals, through Integral-By-Parts (IBP) identities, reduce them to a smaller set of independent integrals, known as master integrals (MIs). In twisted de-
Mandal Manoj Kumar
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Motivic renormalization and singularities [PDF]
, 2009 We consider parametric Feynman integrals and their dimensional regularization from the point of view of differential forms on hypersurface complements and the approach to mixed Hodge structures via oscillatory integrals.
Marcolli, Matilde
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Reply to comment on "Lost in translation: topological singularities in group field theory"
, 2011 In [1, arXiv:1102.1844] the author disputes the conclusion of our paper [2, arXiv:1006.0714]. He claims that the Feynman graphs of three dimensional group field theory always represent pseudo manifolds. However, [1] uses a different definition for pseudo
Gurau, Razvan
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ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.An α‐Al2O3‐decorated multilayer graphene membrane enables highly selective lithium ion extraction from artificial seawater via electrodialysis. The confined ion channels and competitive ion transport dynamics enhance lithium selectivity, achieving 88.9% purity and 88.6% recovery over three extraction cycles while maintaining stable ion flux.
Dae Yeop Jeong +8 more
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